<template>
  <div>
    <!-- 面包屑导航区域 -->
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>权限管理</el-breadcrumb-item>
      <el-breadcrumb-item>角色列表</el-breadcrumb-item>
    </el-breadcrumb>
    <!-- 卡片区域 -->
    <el-card>
      <el-row>
        <el-col>
          <el-button type="primary">添加角色</el-button>
        </el-col>
      </el-row>
      <!-- 角色区域 -->
      <el-table
        :data="rolesList"
        border
        stripe
      >
        <!-- 展开列 -->
        <el-table-column type="expand">
          <template slot-scope="scope">
            <el-row
              v-for="(item1, v1) in scope.row.children"
              :key="item1.id"
              class="vcenter"
              :class="['bdbottom', v1 === 0 ? 'bdtop' : '']"
            >
              <!-- 渲染一级权限 -->
              <el-col :span="5">
                <el-tag @close="removeItemById(scope.row, item1.id)">{{ item1.authName }}</el-tag>
                <i class="el-icon-caret-right"></i>
              </el-col>
              <!-- 渲染二级权限 -->
              <el-col :span="19">
                <el-row
                  v-for="(item2, v2) in item1.children"
                  :key="item2.id"
                  class="vcenter"
                  :class="[v2 === 0 ? '': 'bdtop']"
                >
                  <el-col :span="6">
                    <el-tag
                      type="success"
                      @close="removeItemById(scope.row, item2.id)"
                    >{{item2.authName}}</el-tag>
                    <i class="el-icon-caret-right"></i>
                  </el-col>
                  <el-col :span="18">
                    <el-tag
                      type="warning"
                      v-for="item3 in item2.children"
                      :key="item3.id"
                      closable
                      @close="removeItemById(scope.row, item3.id)"
                    >{{ item3.authName }}</el-tag>
                  </el-col>
                </el-row>
              </el-col>
            </el-row>
          </template>
        </el-table-column>
        <el-table-column type="index"></el-table-column>
        <el-table-column
          prop="roleName"
          label="角色名称"
        >
        </el-table-column>
        <el-table-column
          prop="roleDesc"
          label="角色描述"
        >
        </el-table-column>
        <el-table-column
          width="300px"
          label="操作"
        >
          <template slot-scope="scope">
            <el-button
              size="mini"
              type="primary"
              icon="el-icon-deit"
              @click="editRole(scope.row.id)"
            >编辑</el-button>
            <el-button
              size="mini"
              type="danger"
              icon="el-icon-delete"
              @click="deleteRole(scope.row.id)"
            >删除</el-button>
            <el-button
              size="mini"
              type="warning"
              icon="el-icon-setting"
              @click="setRightsDialog(scope.row)"
            >分配权限</el-button>
          </template>
        </el-table-column>
      </el-table>
    </el-card>
    <!-- 设置分配权限对话框 -->
    <el-dialog
      title="分配权限"
      :visible.sync="setRightsDialogVisible"
      width="50%"
      @close="handleDialogClose"
    >
      <!-- 树形结构控件 -->
      <el-tree
      :data="rightsList" :props="defaultProps"
      show-checkbox
      node-key="id"
      default-expand-all
      :default-checked-keys="defKeys"
      ref="treeRef"
      ></el-tree>
      <span
        slot="footer"
        class="dialog-footer"
      >
        <el-button @click="setRightsDialogVisible = false">取 消</el-button>
        <el-button
          type="primary"
          @click="setRights"
        >确 定</el-button>
      </span>
    </el-dialog>
  </div>
</template>
<script>
export default {
  data() {
    return {
      // 角色列表
      rolesList: [],
      setRightsDialogVisible: false,
      // 权限列表
      rightsList: [],
      defaultProps: {
        label: 'authName',
        children: 'children'
      },
      // 默认选中节点数组
      defKeys: [],
      roleId: ''
    }
  },
  created() {
    this.getRolesList()
  },
  methods: {
    async getRolesList() {
      const { data: res } = await this.$http.get('roles')
      if (res.meta.status !== 200) {
        return this.$message.error('获取角色列表失败')
      }
      this.$message.success('获取角色列表成功')
      this.rolesList = res.data
      // console.log(this.rolesList)
    },
    async removeItemById(role, rightId) {
      const confirmResult = await this.$confirm('此操作将删除该权限, 是否继续?', '提示', {
        confirmButtonText: '确定',
        cancelButtonText: '取消',
        type: 'warning'
      }).catch(err => err)
      // console.log(confirmResult)
      // console.log(scope.row)
      if (confirmResult !== 'confirm') {
        return this.$message.info('取消了删除')
      }
      const { data: res } = await this.$http.delete(`roles/${role.id}/rights/${rightId}`)
      if (res.meta.status !== 200) {
        return this.$message.error('删除权限失败')
      }
      // this.getRolesList()
      role.children = res.data
    },
    // 递归获取三级权限id节点
    getRightsNode(node, arr) {
      if (!node.children) {
        return arr.push(node.id)
      }
      node.children.forEach(item => {
        this.getRightsNode(item, arr)
      })
    },
    // 关闭对话框处理事件
    handleDialogClose() {
      this.defKeys = []
    },
    // 设置角色权限
    async setRights() {
      // 获取权限id列表
      const ids = [
        ...this.$refs.treeRef.getCheckedKeys(),
        ...this.$refs.treeRef.getHalfCheckedKeys()
      ]
      const idStr = ids.join(',')
      console.log(idStr)
      // 调用接口
      const { data: res } = await this.$http.post(`roles/${this.roleId}/rights`, { rids: idStr })
      if (res.meta.status !== 200) {
        return this.$message.error('分配权限失败')
      }
      this.$message.success('分配权限成功')
      this.getRolesList()
      this.setRightsDialogVisible = false
    },
    editRole(id) { },
    deleteRole(id) { },
    async setRightsDialog(role) {
      this.roleId = role.id
      const { data: res } = await this.$http.get('rights/tree')
      if (res.meta.status !== 200) {
        return this.$message.error('获取权限列表失败')
      }
      this.rightsList = res.data
      this.getRightsNode(role, this.defKeys)
      this.setRightsDialogVisible = true
    }
  }
}
</script>
<style lang="less" scoped>
.el-tag {
  margin: 7px;
}
.bdtop {
  border-top: 1px solid #eee;
}
.bdbottom {
  border-bottom: 1px solid #eee;
}
.vcenter {
  display: flex;
  align-items: center;
}
</style>
